C. 12 / 12
ExplanationStep 1: Factorial relation is 12! = 12×11!. Step 2: 12!/11! = 12. Step 3: Factorial cancellation makes calculation faster.
Step 1: Factorial relation 12! = 12×11! होता है। Step 2: 12!/11! = 12 है। Step 3: Factorial cancellation से calculation तेज होती है।
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